One often hears it said that one should ignore criticism. I do not agree that it is always wise to ignore criticism of oneself and one’s endeavors, even when the criticism is ill-natured, exhibitionistic, and predictable. For even when that is the character of the criticism, there is sometimes something to be learned from it not only about oneself and one’s critics, but about the world we live in.
William F. Buckley Jr., Aug. 1, 1956, National Review